Description

All of these routines copy wchstr, which points to a string of
wchar_t characters, directly into the window image structure starting at the current
cursor position. The four routines with n as the last argument
copy at most n elements, but no more than will fit on
the line. If n=-1 then the whole string is copied, to the
maximum number that fit on the line.

The position of the window cursor is not advanced. These routines work
faster than waddnwstr(3CURSES) because they merely copy wchstr into the window image
structure. On the other hand, care must be taken when using these
functions because they don't perform any kind of checking (such as for
the newline character), they do not advance the current cursor position, and
they truncate the string, rather than wrapping it around to the new
line.

RETURN VALUE

All routines return the integer ERR upon failure and an integer value
other than ERR upon successful completion, unless otherwise noted in the preceding
routine descriptions.